B63C 2011/165

Comprising two or more air ducts leading from the mouthpiece to the

Official title: {comprising two or more air ducts leading from the mouthpiece to the air inlet or outlet opening}

B63C2011/165 (Comprising two or more air ducts leading from the mouthpiece to the) appears on 33 US grants and 52 published applications in this corpus.

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Granted patents
33
Published applications
52
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38
Latest grant
6 Oct 2026